Merge pull request #39 from Sam-Burns/fix-php8-build

Fix PHP 8.0 build setup; specify stream select timeout

Merge pull request #36 from PiPHP/php-version-req

Remove 7.4 from requirements as it's covered by ^7.3

Merge pull request #35 from PiPHP/add-php-versions

Allow users to run 7.3, 7.4, or 8.0

Merge pull request #34 from PiPHP/php-7.3

Define PHP 7.3 as required. Upgrade to PHPUnit 9

Merge pull request #27 from PiPHP/github-actions

Start github actions

Merge pull request #13 from PiPHP/rewind-fix

Fixed scrutinizer issue: rewind called on undefined var

Merge pull request #11 from PiPHP/first-interrupt

Further bugfix for first interrupt

Merge pull request #10 from PiPHP/first-interrupt

Initial Interrupt Bugfix

Merge pull request #9 from PiPHP/v0.3

Split input and output pins

Merge branch 'master' of github.com:PiPHP/GPIO